乔家大院不同舒适度标准的游客承载量估算和景区游客安全预警研究
교가대원불동서괄도표준적유객승재량고산화경구유객안전예경연구
Study on the Tourism Safety Early Warning and the Tourism Carrying under Different Comfort-standard in the Scenic Spot of the Qiaojiadayuan
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